Where is ccrm on 98 mustang

Black is ground and the red wire will be the power wire. You can have your friend simply turn on the air conditioning to check the voltage wire in question. If you do not have voltage at these wires, you will have to track back to your Ford Mustang CCRM, which is located in your right fenderwell. If you are trying to learn how to check your Ford Mustang CCRM because of other issues, such as your fuel pump, use the diagram below to measure and test each wire in question.

If your engine sensors are not receiving power, you will definitely want to check your CCRM. Before opening your fenderwell however, always check your fuse panel, as well as your ignition switch.

The next pin you will be checking is pin 8 and 10 for constant power from the battery. If you do not have grounds at your sensors, check pin 15 for low reference ground signal. If your Ford Mustang fuel pump is not priming or supplying the engine with fuel, check pin 5 for switched voltage. If these pins are showing power and ground and your vehicle continues to have issues, you will need to replace your CCRM.

Make sure to consult your sales rep with your VIN number for the proper matching replacement part. Thanks for commenting!

The fuel pump on my Mustang 3. The battery is almost new. Should I be seeing battery voltage? Have you checked your fuses? What value are you getting at PIN 13?

This should be battery power. Thanks for the quick response, John. Yes, I checked the fuses. From your answer, it sounds like I should be getting 12 volts at the inertia switch. What do you think could cause those problems?

I would suggest checking your fuel pump directly at the harness to make sure you are getting a switched ON signal. Already jumped the compressor to the low pressure switch and its starts but the car begins to heat. Need help about running a test. Thank You.

My Mustang Cobra, with under miles, gave me trouble starting which led me to believe the in tank fuel pump was the problem.

Having read your info and others on line I have the following info, key on, pin 5 of the CCRM, no voltage. I have checked all the suggested fuses and the inertia switch, the pump will run if I ground the lead in the EEC test plug.

With the above info not sure the next step, replace the CCRM, look else where for the problem? Your comments much appreciated. When you say the pump runs with 12v put to it, have you checked continuity between the CCRM and the positive fuel pump wire? It could have broke or may have a break in it. I would check there before replacing the CCRM. Let us know how it turns out!

Still working on my fuel pump problem. The pump will operate as I have stated earlier if I ground the fuel pump test lead in the EEC test plug and turn the ignition to run.

From what I have read that means that the relay and inertia switch are working as they should. I have not seen any diagram that shows how the EEC test plug is wired to accomplish this or what it is supplying to the fuel pump that is missing under normal conditions. Car is a Cobra. Ken S. So couple of quick questions, are you supplying a ground from an external source?

If so have you checked for continuity between the pump and the relay itself? The only way I get my fans to work is if I turn on the air conditioning fan as well. Please help.

I have a 94 mustang GT 5. Couple of questions. When you go to crank the vehicle, do you hear your fuel pump prime? Do you hear a click or nothing at all when you turn the key? Im currently trying to diagnose The Ac clutch not engaging on my GFs GT, I have jumped the low side switch and checked all fuses and everything appears to be in good working order just to clarify, I bought the car used with the AC non working allready.

Also installed new liquid line with orifice tube as well. Ive googled my eyes clean out of my head and seems it could be this as a culprit.

I know there are relays internally, can they be changed? Any help would be greatly appreciated! Utilizamos Google translate para este comentario , es de esperar que funciona.

Gracias de nuevo. Puede haber un corto causando el fusible se queme o motivos que faltan en su motor. Great article!

I was told it was in the front passenger side wheelwell, but after looking for a bit, I am unable to find it. What is the best method to find it? Is there a hose or wire I can follow to it from something?

I jiggled the module wiring and it started. Replaced the module since I had it out, car would not start. SO I pretty much concluded the wiring harness seems to be the issue. Any suggestions. Hi Brian, breaks in the wiring harness are always the worst. Test continuity between the individual wires using a multimeter 2. Either one is quite a bit of work, but ideally a new harness is best, especially if you dont want to deal with electric gremlins. Sorry to be the bearer of bad news. Best of luck and let us know how it turns out.

I have a Ford Mustang. I have just put a brand new starter on it, and the battery is fully charged. When you turn the key the car acts like it wants to start, but it is very weak and does not turn completely over.

The cables on the battery get very hot as well. I have no idea what the module does. With all this information, I am at a total loss as to why the vehicle will not start. I am not sure if it is the module or possibly something else.

Please help. Do you. That part is your Constant Control Relay Module CCRM ; it's a separate deal from the relay box under the hood that contains the high-current power relays.